Climate averages 1991–2020
Thimphu weather
in September.
A mild, very wet month: the 4th warmest and the 9th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a mild month in Thimphu: daytime highs average 18.6°C and nights cool to about 12.1°C. By daytime temperature it is the 4th warmest of the 12 months.
Expect about 255 mm of rain on roughly 26 days, which makes September a very wet month (the 9th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 21 min on an average September day.
The nearest other city in this atlas is Jaigaon (74 km away). In September its highs average 27.8°C, 9.2°C warmer than Thimphu, with 418 mm of rain.
From September to October, average highs fall by 2.6°C to 16.0°C, and monthly rainfall falls from 255 mm to 139 mm.
The annual picture
September in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Thimphu climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 7.2°C-0.5°C | -0.5°C | 65 | 17.2 | 10.611 h |
| February | 9.0°C0.8°C | 0.8°C | 95 | 21.2 | 11.211 h |
| March | 12.6°C3.3°C | 3.3°C | 151 | 27.0 | 12.012 h |
| April | 15.8°C6.1°C | 6.1°C | 160 | 26.1 | 12.813 h |
| May | 17.9°C9.4°C | 9.4°C | 236 | 28.8 | 13.513 h |
| June | 19.2°C12.6°C | 12.6°C | 378 | 29.2 | 13.814 h |
| July | 19.2°C13.6°C | 13.6°C | 484 | 30.2 | 13.714 h |
| August | 19.4°C13.4°C | 13.4°C | 350 | 28.8 | 13.113 h |
| September, selected | 18.6°C12.1°C | 12.1°C | 255 | 26.2 | 12.312 h |
| October | 16.0°C8.0°C | 8.0°C | 139 | 22.8 | 11.512 h |
| November | 12.5°C3.9°C | 3.9°C | 72 | 18.2 | 10.811 h |
| December | 9.4°C1.1°C | 1.1°C | 59 | 17.0 | 10.410 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
September in nearby cities
- Jaigaon in SeptemberIndia · 74 kmHigh 27.8°C · Low 23.6°C · 418 mm rain
- Gangtok in SeptemberIndia · 103 kmHigh 20.5°C · Low 15.2°C · 508 mm rain
- Koch Bihār in SeptemberIndia · 128 kmHigh 30.2°C · Low 24.6°C · 460 mm rain
- Jalpāiguri in SeptemberIndia · 139 kmHigh 29.7°C · Low 24.2°C · 468 mm rain
- Dārjiling in SeptemberIndia · 144 kmHigh 19.7°C · Low 14.5°C · 416 mm rain
- Siliguri in SeptemberIndia · 147 kmHigh 29.0°C · Low 23.5°C · 411 mm rain
- Rangpur in SeptemberBangladesh · 195 kmHigh 30.4°C · Low 24.8°C · 334 mm rain
- Thākurgaon in SeptemberBangladesh · 198 kmHigh 30.3°C · Low 24.6°C · 310 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Thimphu) is explained once on the Thimphu year overview and on the Sources, method and limits page.